import Vue from "vue";
import App from "./App.vue";
import Element from "element-ui";
import Antd from "ant-design-vue";
import router from "./router";
import "element-ui/lib/theme-chalk/index.css";
import "ant-design-vue/dist/antd.css";
import locale from "element-ui/lib/locale/lang/en";
import animated from "animate.css";
Vue.use(animated);

Vue.config.productionTip = false;
Vue.use(Antd);
Vue.use(Element, { locale });

// 弹窗拖拽属性
/**
 * @directive 自定义属性
 * @todo 弹窗拖拽属性
 * @desc 使用在弹窗内部任意加载的html添加v-drag
 * @param .ant-modal-header 弹窗头部用来拖动的属性
 * @param .ant-modal 拖动的属性
 */
Vue.directive("drag", (el, binding, vnode, oldVnode) => {
  // inserted (el, binding, vnode, oldVnode) {
  Vue.nextTick(() => {
    const isThemeModal = el.classList.contains("grid-theme");
    const dialogHeaderEl = isThemeModal
      ? el.querySelector(".ant-tabs-bar")
      : document.querySelector(".ant-modal-header");
    const dragDom = isThemeModal
      ? el.querySelector(".ant-modal")
      : document.querySelector(".ant-modal");
    // dialogHeaderEl.style.cursor = 'move';
    dialogHeaderEl.style.cssText += ";cursor:move;";
    // dragDom.style.cssText += ';top:0px;'

    // 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null);
    const sty = (function () {
      if (window.document.currentStyle) {
        return (dom, attr) => dom.currentStyle[attr];
      } else {
        return (dom, attr) => getComputedStyle(dom, false)[attr];
      }
    })();

    dialogHeaderEl.onmousedown = (e) => {
      // 鼠标按下，计算当前元素距离可视区的距离
      const disX = e.clientX - dialogHeaderEl.offsetLeft;
      const disY = e.clientY - dialogHeaderEl.offsetTop;

      const screenWidth = document.body.clientWidth; // body当前宽度
      const screenHeight = document.documentElement.clientHeight; // 可见区域高度(应为body高度，可某些环境下无法获取)

      const dragDomWidth = dragDom.offsetWidth; // 对话框宽度
      const dragDomheight = dragDom.offsetHeight; // 对话框高度

      const minDragDomLeft = dragDom.offsetLeft;
      const maxDragDomLeft =
        screenWidth -
        dragDom.offsetLeft -
        dragDomWidth -
        (isThemeModal ? 10 : 0);

      const minDragDomTop = dragDom.offsetTop;
      const maxDragDomTop =
        screenHeight -
        dragDom.offsetTop -
        dragDomheight -
        (isThemeModal ? 10 : 0);

      // 获取到的值带px 正则匹配替换
      let styL = sty(dragDom, "left");
      let styT = sty(dragDom, "top");

      // 注意在ie中 第一次获取到的值为组件自带50% 移动之后赋值为px
      if (styL.includes("%")) {
        // eslint-disable-next-line no-useless-escape
        styL = +document.body.clientWidth * (+styL.replace(/\%/g, "") / 100);
        // eslint-disable-next-line no-useless-escape
        styT = +document.body.clientHeight * (+styT.replace(/\%/g, "") / 100);
      } else {
        styL = +styL.replace(/\px/g, "");
        styT = +styT.replace(/\px/g, "");
      }

      document.onmousemove = function (e) {
        // 通过事件委托，计算移动的距离
        let left = e.clientX - disX;
        let top = e.clientY - disY;

        // 边界处理
        if (-left > minDragDomLeft) {
          left = -minDragDomLeft;
        } else if (left > maxDragDomLeft) {
          left = maxDragDomLeft;
        }

        if (-top > minDragDomTop) {
          top = -minDragDomTop;
        } else if (top > maxDragDomTop) {
          top = maxDragDomTop;
        }
        // 移动当前元素
        dragDom.style.cssText += `;left:${left + styL}px;top:${top + styT}px;`;
      };

      document.onmouseup = function (e) {
        document.onmousemove = null;
        document.onmouseup = null;
      };
    };
  });
});

new Vue({
  router,
  render: (h) => h(App),
}).$mount("#app");
